Finally I've put together a list that has my faves.
Favorite Saiyan villians: hard for me to pick a number 1. I love both Vegeta, Nappa and Raditz.
favorite villian of the Frieza Force: Zarbon! No doubt. I've grown fond of Mr. Dodoria over a few months also. And who can forget that lovable tyrant Frieza himself?
favorite Ginyu: Jeice. It's only obivous. lol! But I love all the Ginyus. All captured my heart in a special way.
Favorite Android: Ohhhh! Android 17, baby!!

Yet again, i fell in love with all the Androids. The Android saga was when I first began to watch DBZ. I like Cell to, but his first form is better IMO.
Favorite Buu saga villian: They really didn't appeal to me. Sorry to say.